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1.Description.
This series of dierun adopts linear design, its valve main structure is composed of valve body, valve sense, valve seat, valve stem and transmission operator, etc. The valve seat adopts detaching structure, and according to the physical and chemical characteristics of different media, the corresponding materials of high temperature resistance, low temperature resistance, corrosion resistance, light resistance and aging resistance can be selected.
2.Main parts&material
| No. | Part | Material | China stardard |
| 1 | Body | Cast iron | QT450-10 |
| 2 | Disc | Ductille iron | ZG0Cr18Ni9 |
| 3 | Stem | SS410 | 20Cr13 |
| 4 | Seat | EPDM | EPDM |
| 5 | O-Ring | NBR | EPDM |
3.Features
-Wide floating rubber seats are removable for field service and are designed to be watersheds wide.
-Two-way isostatic seal, low water damage,
-Special tangential pin connections that bind disc and stem together without loosening or weakening stem strength and with good interchangeability, certified by WRAS.
4.Execution standard
| Design standard | API 609.BS5155.BSEN593 | |
| Flange connection standard | GB/T17241.6 | |
| Top flange standard | ISO5211 | |
| Structural length standard | GB/T12221 | |
| Inspection testing standard | BSEN12266-1 | |
5.Technical parameters
| Nominal diameter | DN50~DN1000 | |
| Nominal pressure | PN10/PN16 | |
| Operating temperature | -45°C~200°C | |
| Seal test | 1.1PN | |
| Shell test | 1.5PN | |
| Suitable medium | Water | |
6.Operating principle
When the valve is in use, it turns the rotary handwheel above the valve body and connects the stem to drive the lower butterfly plate to rotate. Generally, the rotation range is between 0 and 90°. The clamping butterfly valve adopts the eccentric principle to strengthen the sealing of the valve.
1.Description.
This series of dierun adopts linear design, its valve main structure is composed of valve body, valve sense, valve seat, valve stem and transmission operator, etc. The valve seat adopts detaching structure, and according to the physical and chemical characteristics of different media, the corresponding materials of high temperature resistance, low temperature resistance, corrosion resistance, light resistance and aging resistance can be selected.
2.Main parts&material
| No. | Part | Material | China stardard |
| 1 | Body | Cast iron | QT450-10 |
| 2 | Disc | Ductille iron | ZG0Cr18Ni9 |
| 3 | Stem | SS410 | 20Cr13 |
| 4 | Seat | EPDM | EPDM |
| 5 | O-Ring | NBR | EPDM |
3.Features
-Wide floating rubber seats are removable for field service and are designed to be watersheds wide.
-Two-way isostatic seal, low water damage,
-Special tangential pin connections that bind disc and stem together without loosening or weakening stem strength and with good interchangeability, certified by WRAS.
4.Execution standard
| Design standard | API 609.BS5155.BSEN593 | |
| Flange connection standard | GB/T17241.6 | |
| Top flange standard | ISO5211 | |
| Structural length standard | GB/T12221 | |
| Inspection testing standard | BSEN12266-1 | |
5.Technical parameters
| Nominal diameter | DN50~DN1000 | |
| Nominal pressure | PN10/PN16 | |
| Operating temperature | -45°C~200°C | |
| Seal test | 1.1PN | |
| Shell test | 1.5PN | |
| Suitable medium | Water | |
6.Operating principle
When the valve is in use, it turns the rotary handwheel above the valve body and connects the stem to drive the lower butterfly plate to rotate. Generally, the rotation range is between 0 and 90°. The clamping butterfly valve adopts the eccentric principle to strengthen the sealing of the valve.
